third_party/WebKit/LayoutTests/fast/canvas/OffscreenCanvas-2d-globalAlpha-expected.html - Issue 2526693003: Make OffscreenCanvas 2D context support globalAlpha

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Side by Side Diff: third_party/WebKit/LayoutTests/fast/canvas/OffscreenCanvas-2d-globalAlpha-expected.html

Issue 2526693003: Make OffscreenCanvas 2D context support globalAlpha (Closed)

Patch Set: clean up tests Created 4 years ago

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	1 <html>

	2 <body>

	3 <canvas id="canvas" width="600" height="100" ></canvas>

	4 <script>

	5 var canvas = document.createElement("canvas");

	6 canvas.width = canvas.height = 100;

	7 var context = canvas.getContext("2d");

	8 context.fillStyle = 'green';

	9 context.fillRect(0, 0, 100, 100);

	10 var canvas2 = document.createElement("canvas");

	11 var context2 = canvas2.getContext("2d");

	12 var drawCanvas = document.getElementById("canvas");

	13 var drawCtx = drawCanvas.getContext("2d");

	14

	15 context2.globalAlpha = 0.0;

	16 context2.drawImage(canvas, 0, 0);

	17 drawCtx.drawImage(canvas2, 0, 0, 100, 100, 0, 0, 100, 100);

	18

	19 context2.globalAlpha = 0.2;

	20 context2.drawImage(canvas, 0, 0);

	21 drawCtx.drawImage(canvas2, 0, 0, 100, 100, 100, 0, 100, 100);

	22

	23 context2.globalAlpha = 0.4;

	24 context2.drawImage(canvas, 0, 0);

	25 drawCtx.drawImage(canvas2, 0, 0, 100, 100, 200, 0, 100, 100);

	26

	27 context2.globalAlpha = 0.6;

	28 context2.drawImage(canvas, 0, 0);

	29 drawCtx.drawImage(canvas2, 0, 0, 100, 100, 300, 0, 100, 100);

	30

	31 context2.globalAlpha = 0.8;

	32 context2.drawImage(canvas, 0, 0);

	33 drawCtx.drawImage(canvas2, 0, 0, 100, 100, 400, 0, 100, 100);

	34

	35 context2.globalAlpha = 1.0;

	36 context2.drawImage(canvas, 0, 0);

	37 drawCtx.drawImage(canvas2, 0, 0, 100, 100, 500, 0, 100, 100);

	38 </script>

	39 </body>

	40 </html>

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